Cork facing



Feb. 22 1927. 1,618,704

W. F. GRUPE CORK FACING Filed July 18, 1925 "f'for mangle rolls and the like.

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, Application flied Thisi'nventio'n relates to facings of cork .Anl b]60t of this invention is to provide for mangle rolls and the like a facing of 1mproved construction for use with the usual wrapgling of sheeting of duck, linen, cotton and e 'ke, for attaining sistance for eifecting the ironing of apparel T and permitting'buttons and like addenda of 10 apparel to pass therethrough without breakage or other injury. A further object of the invention is to provide a facing of the above character in a form capable of bein readily a lied to the 1 mangle rolls and of ing rea y renewed as desired and at'minimum e' ense.;; With the above and other cheats in view, a preferred form of my facing for mangle rolls and the like is formed of natural corkwood arranged as strips and constructed to be applied to the surface of the roll spirall grooves machined on the cylindrical face of the roll and having a fidetermined width, inserting blocks of cor ood having a bottom extension of a width slightly greater than the width of the groove whereby upon com pressing such extension within the groove,

the strips formed of blocks of natural corkwood are retained therein.

In such preferred form, the blocks of corkwood for any one groove are secured to one another in longitudinal alignment to form a strip and the upper face of the cork is cutor grooved to en ance the bending or twisting of the corkwood and thereby facilitate the insertion of the corkwood within 40 the groove and also improve the extent of yieldability of the corkwood during the ironing operations.

Further features and objects of the invention will be more fully understood from the following detail description and the accompanying drawings, in which Fig. 1 is 'a perspective view showing a strip formed of blocks of natural corkwood, secured longitudinally to one another and arranged for installation on the surface of the mangle roH;

Fig. 2 is a detail perspective view of a mangle roll having a'series of helical grooves machined on the cylindrical face thereof and I and the usual outer ,coveringli off canvas or the required re-' other;

- roll 10 is of the usual construction, cylin irelatively to the axis of the roll. Ane fective method. of securing such strips of. corkwood to the mangle .roll is by means of alignment with one another and coact with a serial-I6. 052,205. j

'strip's of blocksof coikwtda as sheeting or the like;-

Fig. 3 is a detail transverse sectional viw of a mangle roll shown in Fig. 2, on an on larged scale, illustrating threeg'rooves" and the three strips of corkwood therein; 1 Fig. 4 is a detail (perspective view'of a modified strip forum of blocksof natural corkwood secured longitudinally to one an- I Fig. 5 is a detail transverse sectional 'ele' vation similar to Fig. 3, showing the form of corkwood stripsho'wnin Fig.4; and -Fig. 6 is a detail perspective view showing a modification of strip of natural corkwood anchored to a carrier of metal or the like adapted to be inserted in the groove of the mangle roll.

Referring to Figs. 1; 2 and 3, the man le 76 cal in form and having the oppositely extend ng shafts 11 for insertion in the usual bearings. Usually three or more mangle rolls are mounted insubstantial horizontal 80 curved bed of a hollow formed cast iron casng, which is supplied with steam for obtainingthe necessary ironing temperature. 'Ac cordlngly, in the ironing operation the apparel and other articles to be laundered pass successively between the mangle rolls and the heated bed upon rotation of the mangle 7 rolls in the proper propelling direction- Pursuant to my invention, the cylindrical surface of the mangle roll 10 is shown to have the grooves 13 extend spirallyov er the surface thereof. Such grooves 13 are preferably of dove-tailed edge formation and are spaced from one another a uniform predetermined distance. d

An efficient method of forming the corkwood facing 14 for such grooves 13 isind oated m Fig. 1, namely, in the form of blocks 15, 16, 17, etc., secured longitudinally to one another by means of adhesive, metal pins or other accepted manner of connection and provided with the bottom extension 18, formed by cutting away the end portions indicated at 19, 20, on the opposite sides of the extension 18. The width of the bottom extension 18 is slightl larger than the width of each dove-taile groove 13, whereby inserting the bottom extension 18 within a oove 13, the friction of the extension within the groove effects the anchoring of the strip therein, with or without adhesive as desired.

The width of the upper portion of the strip 14 is selected relatively to the spac ng of the grooves 13 whereby upon insertion of the stri s 14 in the grooves 13, the strips are broug t in substantial contact at their lateral faces to one another. To facilitate the entry of the strip 14 of natural corkwood within such groove 13, the strip 14 is preferably knife-cut, as at 21, 22, parallel to one another and extending longitudinally of the strip; such knife-cuts 21, 22 are located preferably out of alignment with the lateral edge of the bottom extension 18 and in a region of the upper portion of the corkwood lying verticall above and within the lateral edges of the ottom extension 18, as is indicated in Figs. 1 and 3.

In Fig. 3, the mangle roll of Fig. 2 is shown on an enlarged scale and it will be observed that the strips 14 of the contiguous grooves 13 engage one another laterally as is indicated at 23, 23. It will be also observed that the knife-cuts 21, 22 enhance the lateral resiliency of corkwood when twisted sufficiently to eflect entry within the grooves 13.

For the purpose of providing the aforesaid construction of facing of natural corkwood for owners or operators of laundering machinery, the facing is marketed in the form of strips having the characteristics shown in Fig. 1 and such strips may be of a length to fill a single groove or of shorter length to enable two or more strips to fill onegroove.

In Fig. 4 I have shown a modified form of strip 25 of natural corkwood formed similarly ofblocks 26, 27, etc. secured end to end longitudinally to one another to form a strip of the desired length. In this form of the invention, the respective blocks are provided with the'bottom extensions 18 of the construction and arrangement set forth hereinabove in respect to the strip shown in Figs. 1, 2 and 3. However, in the form shown in Fig. 4, the upper portion of the blocks 27 are saw-cut wit a relatively wide out to form a groove 28. The width of the upper face 29 of each strip is less than the spacingbetween the grooves 13 to thereby provide the clearance 30 between the conti ous lateral faces of the strips 25 of a width substantially equal to the width of the saw-cut groove 28 when opened-out up on insertion of the blocks 25, within the groove 13, as indicated in 5.

In Fig. 5, I have indicate the groove 13 appearing at the extreme r1ghthand side, provided with the anchoring pins 13', in which circumstance the edges of the groove 13' is straight, that is, not dove-tailed.

In Fi 6, I have shown a further modification 0 the invention, comprising the strip 31 mounted in a carrier 32 of metal or the 11KB having the oppositely disposed upper end flanges 33, 34, providing therebetween a groove for reception therewithin of the bottom extension 18 of the cork strip 31. The carrier 31 is provided with the bottom extension 35 for entr in a groove 13 of the mangle roll 10. In t 1e circumstance of constructing the carrier 32 of steel or like rigid metal, the carrier is preferably provided with the groove or saw-cut 36 on its upper face, which may be centrally thereof to facilitate the necessary twisting of the carrier upon insertion within the spiral groove 13.

As will be perceived from the arrangement shown in Fig. 6, the outer facing or paddin of the ironing roll is formed of rows of relatively small blocks 31, of cork arranged side by side and mounted on and secured to a metallic carrier or backing sheet 32. The relatively small blocks of cork, composing the rows constituting the padding for the ironing roll, have the lower art of their sides cut away, as illustrated 1n Fig. 6, to receive the oppositely disposed, inwardly projecting flanges or ribs 33, 3 1 of the metal carrier or backing sheet 32, whereby the lower portions of the blocks of cork are narrower than the tops, and also where by the upper portions of the sides of the blocks of cork project over the ribs 32.

Upon insertion of the cork strips on the mangle roll 10 in the manner as set forth hcreinabove, and applying the usual outer coverings of canvas, linen or cotton sheet ing or the like, indicated at 12 in Fig. 2, the mangle roll is faced with a material capable of withstanding the pressure required in the ironing operation and at the same time possessing yieldability to permit buttons and like addenda of relatively hard and fragile material to pass between the rolls and the heated bed without injury.

Upon providing the mangle roll with a facing of the above nature, it will be ob scrvedthat the material of the facing is capable of withstanding the atmosphere of steam in the presence of the necessary elevated temperature required in ironing. If desired, the strip may be dipped in suitable heat-proof and moisture-proof coating material, such as solutions of bakelite, shellac or the like for excluding the moisture from within the ores of the natural cork wood.

Such knife-cuts 21, 22, or saw-cuts 28 afford ventilation of the corkwood to dissipate moisture and heat in the ironing operation, and the same end is secured by spacing the strips of cork-wood from one another, thereby enabling the removal of moisture and heat either by means of the knife-cuts or spacing between the strips or both. If

desired, the strips may be formed of blocks 1 of reduced width and without knife cuts and the ventilation effected by clearances between the strips from one another.

The manner of securing the corkwood material to the steel roll, as set forth hereinabove, is efiected without the use of any material such as the ordinary adhesives for corkwood usually containing albumen, casein or the like, which substances deteriorate in the presence of steam and under the condition of pressure and become putrid, thereby losing their chemical binding effect and creating objectionable odor.

The arrangement of the grooves in a spiral direction about the periphery of the roll enhances the life of the blocks of natu ral corkwood as compared with grooves arranged substantially parallel to the longitudlnal axis of the roll, and it will be observed upon rotation of the roll in either direction, that the strips are successively brought into engagement with the articles to be ironed in a manner to force the strips into increased anchorage engagement with the grooves and in a direction of maximum resistance of the corkwood. In this connection it is pointed out that natural corkwood is cut to have the pores of the corkwood extend from the bottom tothe top of the block, as viewed in Figs. 1 and 4, and accordingly the arrangement of the blocks of corkwood as shown in Figs. 1 and 4, presents in the ironing operation the face of each block of corkwood having the maximum coefficient of crushing stren th.

Whereas I havedescri ed my invention by reference to specific forms thereof it will be understood that many changes and modifications may be made without departing from the spirit of the invention.

I claimhavin spaced spirally arranged grooves on its cy indrical' surface, of a plurality of strips of cork formed of blocks secured end to end to one another and disposed substan tially parallel to said grooves, said blocks of cork being provided with slits extending in alignment with one another and substantially parallel to said grooves, the width of said strips corresponding to the spacing of said grooves to thereby provide a substantially complete outer surface of cork.

2. The combination with a mangle roll having spaced spirally arranged grooves on its cylindrical surface, of a plurality of strips of cork formed of blocks secured end to end to one another, the width of said strips corresponding to the spacing of said grooves to provide a substantially complete outer surface of natural cork.

The combination of a mangle roll having spaced spirally arranged grooves on its cylindrical surface, a carrier secured in said grooves and strips of cork carried by said carriers respectively, and arranged to pro vide an outermost surface of cork for the roll.-

4. The combination of a mangle roll having spaced, spirally extending grooves on its cylindrical surface, carriers secured in said grooves, and strips of cork carried by said carriers respectively, and arranged to provide an outermost surface of cork for the roll.

5. The combination with a mangle roll of metallic material and having spaced spirally arranged grooves on its cylindrical surface, of a lurality of strips of cork formed of blocks isposed end to end to one another and a plurality of strips of metallic material respectively supporting said strips of cork, the bases of said strips of metallic material extending within said spirally arranged grooves. 1. The combination with "a mangle roll specification this 28th day of June 1923.

In testimony whereof I have signed this 7 WILLIAM F. GRUPE. 

